Clamping device for pipe-joints.



R. S. LORD.

CLAMPING DEVICE FOR PIPE JOINTS.

APPLIOATION rmzn 001'. 22, 1910.

1,01 9,7 1 7. Patented Mar. 5, 1912.

ITNESSES. mvzu'roa. v 0.22:5

coLUMBIA PLANOGRAPH HI-WASHINGTON. D

RAYMOND S. LORD, OF PITTSBURGH, PENNSYLVANIA.

CLAIVIPING DEVICE FOR PIPE-JOINTS.

Specification of Letters Patent.

Original application filed September 20, 1909. Serial No. 518,641.

Patented Mar. 5, 1912.

Divided and this application filed October Serial No. 588,458.

To all whom it may concern:

Be it known that I, RAYMOND S. Loin), a citizen of the United States ofAmerica, residing at Pittsburgh, in thecounty of Allegheny and State ofPennsylvania, have invented a certain new and useful Improvement inClamping Devices for Pipe-Joints,

of which the following is a full, clear, and exact description,reference being had to the accompanying drawings, forming part of thisspecification.

The object of this invention is to provide a simple, inexpensive, andeflicient device for sealing or packing pipe joints against leakage.

The invention will be found particularly adaptable to the sealing ofjoints employing a coupling ring or sleeve,or similarly formed joints.

I will now describe my invention so that others skilled in the art towhich it appertains may understand and construct the same, referring tothe accompanying drawings in which The figure shown illustrates insectional elevation my improved clamping device as embodied in jointsemploying a coupling ring or sleeve.

In the drawing, the reference numerals 2 and 3 indicate the meeting endsof two pipe sections to be joined by the surrounding coupling ringmember or sleeve 4. In abutment with the end faces 5 of the sleeve 4 arethe ring members 6. Each ring member is provided with an inner annularface or wall 7 between which and the outer wall of the pipe member isadapted to be received the packing ring or gasket 8 which may be of anysuitable material and which abuts against the end face 5 contiguous tothe space between the pipe wall and end of the sleeve, as is clearlyshown.

The numerals 9 indicate the follower or clamping rings, each of whichhas the annular projecting flange 10 which is adapted to abut againstthe packing ring 8 and by means of which, when the followers 9 arecaused to be moved toward one another, the packing rings will be causedto be compressed.

Means for drawing together or forcing home the follower rings 9 for aseating of the gaskets or packing rings 8, comprise the bolts 11 whichextend from one follower ring to the other longitudinally across thecoupling sleeve 4 and are provided with the suitable tightening nuts 12The ring members may be held against displacement or creeping by havingthe follower rings 9 brought into close proximity thereto or abutmenttherewith when the latter rings are forced home or drawn toward eachother. The clamping bolts 11 may also, as shown, pass through the rings6, the rings 6 having the radial flange 13 for such engagement with thebolts.

As stated above, as the follower rings are brought together, the packingrings will be caused to be compressed between the walls 7 and the outerfaces of the pipe members and the end faces of the coupling sleeve 4. Bymeans of the packing retaining ring, spreading of the packing ring, whenforced home, laterally or on radial lines, is prevented, insuringeffectual sealing of the joint at the contiguous points of the pipe walland end of coupling sleeve.

The device is simple in construction, be-

ing such that the gasket retaining ring member and follower ring membermay be readily cast, formed from sheet metal, or made from rolledshapes. A packing ring of any suitable material may be employed. Itwill, of course, be apparent, that many changes may be made in theconstruction set forth which would not depart from my invention. I donot, therefore, desire to limit myself thereto.

I do not claim herein the feature of securing the packing retaining ringto the bell of a bell and spigot pipe joint by means of bolting theretoor screw-tapping thereinto, the same being claimed in a separateapplication for Letters Patent of the United States, filed by meSeptember 20th, 1909, Serial No. 518,641 and of which this applicationis a division.

The advantages of my invention will be readily appreciated by thoseskilled in the art. The device is simple, strong, and inexpensive and iseffectual in operation.

Having thus described my invention, what I claim and desire to secure byLetters Patent is 1. In a device of the character described, thecombination with the pipe sections and sleeve portion receiving themeeting ends of the pipe sections, of a ring member in abutment with anend of the sleeve portion and provided with an annular flange disposed"ppositely to the pipe wall, a packing ring interposed between theflange and pipe wall, and means for forcing the packing ring homebet-ween the flange and pipe wall.

2. In a device of the character described, the combination with the pipesections and sleeve portion receiving the meeting ends :t the pipesections, of a ring member surrounding a pipe section and in abutmentwith an end of the sleeve portion and comprising a radial flangedportion and a flange portion lying parallel to the pipe wall, a packingring interposed between the latter flange and the pipe wall, and meansfor forcing the packing ring home between the flange and pipe wall.

3. In a device of the character described, the combination with the pipesections and I sleeve portion receiving the meeting ends of the pipesections, of ring members in abutment with the ends of the sleeve.portion, packing rings interposed between the ring members and pipewalls, second ring members abutting against the packing rings, andclamping means for moving the latter ring members toward each other, theclamping means extending from one ring member to the other end engagingwith the first named ring members.

In testimony whereof, I have hereunto set my hand.

RAYMOND S. LORD.

Nitnesses MARY A. BARTH, M. A. KELLER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

